Nether portal help.

So, I make a nether portal. Go through - No other portals should be anywhere near this one.

Go back through the portal and it creates a new portal and spits me out, like 100 blocks from the original portal. Is there anyway I can convince it to spit me back out where I went in? Like if I obstruct the new portals location after tearing it down?

I make Nether portal A from my home to the nether. When I step back through to go back home the game creates Nether portal B about 100 blocks from nether portal A. Then Nether portal C about 10 blocks from B....

What. /facepalm.

Why won't it just let me use A. Why does it keep creating new portals??

Well there is a way to fix this by using X and Z coordinates (F3). To do so Find the Coords of Portal A after Portals B and C are destroyed, Then destroy that portal in the nether and go to Coords of Portal DIVIDED BY 8 because 8 blocks in the overworld is equal to 1 block in the nether. Build a portal at that location. Hopefully it works good luck! Oh and remember that there are negative and positive coordinates and that Y is just up or down.

Well there is a way to fix this by using X and Z coordinates (F3). To do so Find the Coords of Portal A after Portals B and C are destroyed, Then destroy that portal in the nether and go to Coords of Portal DIVIDED BY 8 because 8 blocks in the overworld is equal to 1 block in the nether. Build a portal at that location. Hopefully it works good luck! Oh and remember that there are negative and positive coordinates and that Y is just up or down.

We tried this. In the nether we had to move the portal about 5 blocks. Now about 3 times out of 4 we come out of the correct portal. The other time it had created a different portal. So it is better - but not perfect. Thanks for the help.